At the time of the 2006 National Census, the rural district's population was 13,243 in 3,286 households. There were 14,192 inhabitants in 3,973 households at the following census of 2011. The 2016 census measured the population of the rural district as 14,646 in 4,563 households. The most populous of its 12 villages was Zagheh, with 3,328 people.
12Mousavi, Mir-Hossein (1 July 1987) [مصوب (Approved) 1366/04/10 (Iranian Jalali calendar)]. ايجاد و تشكيل 38 دهستان شامل روستاها، مزارع و مكانها در قسمتي از شهرستان همدان تابع استان همدان[Creation and formation of 38 rural districts including villages, farms and places in a part of Hamadan County under Hamadan province]. سامانه ملی قوانین و مقررات [National System of Laws and Regulations] (in Persian). وزارت کشور [Ministry of the Interior]. هیات وزیران [Council of Ministers]. پيشنهاد شماره [Proposal Number] 53/5/1/11762. Archived from the original on 21 May 2022. Retrieved 3 August 2026.
12سرشماري عمومي نفوس و مسكن 1395: استان همدان[General Population and Housing Census 2016: Hamadan Province]. مرکز آمار ایران [Statistical Centre of Iran] (in Persian). Archived from the original(Excel) on 21 April 2021. Retrieved 3 August 2026.
↑Habibi, Hassan (10 November 1993) [تاریخ تصویب (Approval date) 1372/08/19 (Iranian Jalali calendar)]. تصویبنامه راجع به ایجاد و تاسیس بخش لالجین در استان همدان[Approval letter regarding the creation and establishment of Lalejin District in Hamadan province]. صلح [Saleh] (in Persian). وزارت کشور [Ministry of the Interior]. کمیسیون سیاسی دفاعی هیأت دولت [Political Defense Commission of the Government Board]. پیشنهاد شماره [Proposal No.] 7641/42/1090/1/9. Archived from the original on 12 February 2024. Retrieved 3 August 2026.
12Habibi, Hassan (1 June 1997) [مصوب (Approved) 1376/03/11 (Iranian Jalali calendar)]. تصویبنامه راجع به ایجاد و تاسیس بخش شیرین سو مصوب[Approval letter regarding the creation and establishment of Shirin Su District]. سامانه ملی قوانین و مقررات [National System of Laws and Regulations] (in Persian). وزارت کشور [Ministry of the Interior]. کمیسیون سیاسی دفاعی هیأت دولت [Political Defense Commission of the Government Board]. Resolution 93808/T907. Archived from the original on 20 March 2023. Retrieved 3 August 2026.
↑سرشماري عمومي نفوس و مسكن 1385: استان همدان[General Population and Housing Census 2006: Hamadan Province]. مرکز آمار ایران [Statistical Centre of Iran] (in Persian). Archived from the original(Excel) on 20 September 2011. Retrieved 3 August 2026.
↑سرشماري عمومي نفوس و مسكن 1390: استان همدان[General Population and Housing Census 2011: Hamadan Province]. Iran Data Portal—Syracuse University (in Persian). مرکز آمار ایران [Statistical Centre of Iran]. Archived from the original(Excel) on 17 January 2023. Retrieved 3 August 2026.